<template>
    <div>
        <!-- 面包屑导航 -->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
                        <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="goAddPage">添加商品</el-button>
                </el-col>
            </el-row>

            <!-- table 表格区域 -->
            <el-table :data="goodslist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name"></el-table-column>
                <el-table-column label="商品价格（元）" prop="goods_price" width="120px"></el-table-column>
                <el-table-column label="商品重量" prop="goods_weight" width="80px"></el-table-column>
                <el-table-column label="创建时间" prop="add_time" width="150px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dateFormat}}
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="140px">
                    <template slot-scope="scope">
                        <el-button size="mini" type="primary" icon="el-icon-edit" @click="editById(scope.row.goods_id)"></el-button>
                        <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.goods_id)"></el-button>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
             <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[5, 10, 15, 20]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
             </el-pagination>
        </el-card>

        <!-- 修改对话框 -->
        <el-dialog
        title="提示"
        :visible.sync="editDialogVisible"
        width="50%">
            <el-form :model="editForm" ref="editFormRef" :rules="editFormRules" label-width="120px">
                <el-form-item label="商品名称" prop="goods_name">
                    <el-input v-model="editForm.goods_name"></el-input>
                </el-form-item>
                <el-form-item label="价格" prop="goods_price">
                    <el-input v-model="editForm.goods_price"></el-input>
                </el-form-item>
                <el-form-item label="数量" prop="goods_number">
                    <el-input v-model="editForm.goods_number"></el-input>
                </el-form-item>
                <el-form-item label="重量" prop="goods_weight">
                    <el-input v-model="editForm.goods_weight"></el-input>
                </el-form-item>
                <el-form-item label="介绍" prop="goods_introduce">
                    <el-input v-model="editForm.goods_introduce"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data () {
        return {
            // 查询参数对象
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            // 商品列表
            goodslist: [],
            // 总数据条数
            total: 0,
            // 控制修改对话框的显示与隐藏
            editDialogVisible: false,
            editForm: {
                goods_id: '',
                goods_name: '',
                goods_price: 0,
                goods_number: 0,
                goods_weight: 0,
                goods_introduce: ''
            },
            editFormRules: {
                goods_name: [
                    { required: true, message: '请输入参数名称', trigger: 'blur' }
                ],
                goods_price: [
                    { required: true, message: '请输入参数名称', trigger: 'blur' }
                ],
                goods_number: [
                    { required: true, message: '请输入参数名称', trigger: 'blur' }
                ],
                goods_weight: [
                    { required: true, message: '请输入参数名称', trigger: 'blur' }
                ]
            }
        }
    },
    created () {
        this.getGoodsList()
    },
    methods: {
        // 根据分页获取对应的商品列表
        async getGoodsList () {
            const { data: res } = await this.$http.get('goods', { params: this.queryInfo })
            if (res.meta.status !== 200) {
                return this.$message.error('获取商品列表失败！')
            }
            this.$message.success('获取商品列表成功！')
            // console.log(res.data)
            this.goodslist = res.data.goods
            this.total = res.data.total
        },
        handleSizeChange (newSize) {
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        handleCurrentChange (newPage) {
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        async removeById (id) {
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err => err)

            if (confirmResult !== 'confirm') {
                return this.$message.info('已取消删除！')
            }

            const { data: res } = await this.$http.delete(`goods/${id}`)
            if (res.meta.status !== 200) {
                return this.$message.error('删除失败！')
            }
            this.$message.success('删除成功！')
            this.getGoodsList()
        },
        goAddPage () {
            this.$router.push('/goods/add')
        },
        // 显示编辑对话框
        async editById (id) {
            const { data: res } = await this.$http.get(`goods/${id}`)
            if (res.meta.status !== 200) {
                return this.$message.error('获取商品失败！')
            }
            console.log(res.data)
            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 确定编辑
        editInfo () {
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await this.$http.put(`goods/${this.editForm.goods_id}`, this.editForm)

                if (res.meta.status !== 200) {
                    return this.$message.error('修改信息失败！')
                }

                this.$message.success('修改信息成功！')
                this.getGoodsList()
                this.editDialogVisible = false
            })
        }
    }
}
</script>

<style lang="less" scoped>

</style>
